Improved rotational flow sewage purifier

Abstract

An improved rotational flow sewage purifier comprises a tank body composed of a main body cylinder and an underflow concentration cone, and a blow-off pipe is arranged at the bottom of the tank body; a central rotational flow cylinder, an upper rotational flow clarification device and a filtering device are arranged in the main body cylinder; the improvement lies in that a track type spiral rotational flow groove is arranged in the upper rotational flow clarification device, so that the water purification time is short, the efficiency is high, and the water quality is good; a lower rotational flow concentration device is further arranged, that is, an inner cone ring which is hermetically connected with the upper cone bottom of the underflow concentration cone is arranged on the inner side of the upper part of the underflow concentration cone at an interval, and the inner cone ring and the inner side of the underflow concentration cone on the outer side form a lower rotational flow water channel interlayer, so that the water content of sludge subjected to lower rotational flow secondary concentration is lower; and the concentration of the underflow sludge can be improved by 30-50% compared with that of the original equipment. The device is suitable for treating various sewage bodies containing suspended solids with different masses and concentrations, and is high in purification quality, small in occupied area, and low in power consumption and operation cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment equipment, especially to an improved cyclone sewage purifier for treating sewage containing suspended solids. BACKGROUND

[0002] The prior art sewage purification equipment is difficult to balance in water treatment effect, power consumption, equipment land occupation and operation cost, etc.

[0003] The patent technology of a sewage purifier (ZL201420492552.4) disclosed by the present designer in 2015, known as DH-series high-efficiency cyclone sewage purifier in the industry, has made great progress in the technical effects of the above aspects. However, the sewage purifier still has certain gaps in operation reliability, sewage purification time and sludge moisture content. UTILITARY MODEL

[0004] In view of the defects of the prior art, the utility model provides a sewage purifier with improved structure, which has the advantages of short purification time, good effect, easy operation, low energy consumption, low sludge moisture content after treatment, and is suitable for sewage treatment of sewage containing different quality and concentration of solid suspended solids.

[0005] The utility model provides an improved cyclone sewage purifier, which comprises a tank body, the tank body is composed of a cylindrical main body cylinder in the middle and upper part and a bottom flow concentration cone in the lower part, and the upper end of the main body cylinder has a head; the top of the head has a water outlet pipe and an exhaust pipe, and the bottom of the bottom flow concentration cone has a sewage discharge pipe.

[0006] Three separation devices are arranged in the main body cylinder from bottom to top, the first separation device is a central cyclone cylinder fixed in the lower central part, the upper end of the central cyclone cylinder is provided with an overflow pipe and a nozzle thereof, the lower end of the central cyclone cylinder is provided with a bottom flow pipe and a nozzle thereof, and the water inlet pipe of the sewage to be treated is connected to the upper part of the central cyclone cylinder in a tangent direction from the outside of the main body cylinder, so that the sewage in the water inlet pipe also enters the central cyclone cylinder in a tangent direction, and then the vortex separation process is completed in the central cyclone cylinder; the second separation device is an upper cyclone clarifier arranged above the central cyclone cylinder, and the sewage completes secondary centrifugal separation and gravity separation process here; and the third separation device is a filter device arranged above the upper cyclone clarifier.

[0007] The basic improvement of the utility model lies in that the secondary concentration device is added, that is, a lower cyclone sludge concentration device is additionally arranged, that is, an inner cone ring with a small height and a conical frustum shape coaxial with the cone surface is arranged at the inner side of the upper part of the underflow concentration cone at intervals, the upper cone bottom of the inner cone ring is in closed connection with the upper cone bottom of the underflow concentration cone, and the cone ring interlayer between the outer side of the inner cone ring and the underflow concentration cone constitutes a lower cyclone channel of the lower cyclone sludge concentration device; the underflow pipe nozzle of the central cyclone cylinder is connected to the upper end of the lower cyclone channel in a horizontal tangent direction, so that the concentrated sewage in the underflow pipe nozzle enters the lower cyclone channel in a tangent direction, and the secondary concentration of sludge is realized.

[0008] The basic working process of the utility model is as follows: after the sewage to be treated is flocculated by adding chemicals, the sewage is pressurized into the sewage purifier by a pump, the sewage first enters the central cyclone cylinder in a tangent direction from the water inlet pipe, and first vortex separation is carried out, the water body containing large particle sediments enters the lower cyclone concentration area from the underflow pipe of the central cyclone cylinder downward, the water body containing suspensions enters the cyclone clarifying device from the overflow pipe of the central cyclone cylinder upward, the water body containing large particle sediments enters the newly arranged lower cyclone channel of the lower cyclone concentration device from the nozzle of the underflow pipe in a tangent direction, and the sludge after secondary concentration is settled along the cone surface of the underflow concentration cone, after the water body containing suspensions is separated by centrifugal force and gravity in the cyclone clarifying device, part of the water body containing suspensions continues to enter the filtering device upward for filtration, the filtered clean water enters the clean water area of the head part upward, and finally is output from the water outlet pipe; the other part of the water body containing sediments is settled to the underflow concentration cone for further concentration, and the sludge sinking to the underflow concentration cone is discharged from the blowdown pipe at a fixed time or continuously.

[0009] Further improvement of the utility model is that the upper cyclone clarifying device is an inverted cone with a 55-60 degree angle, the inner surface of the upper cyclone clarifying device is provided with a track type spiral cyclone groove with a width of 125mm and a depth of 80-235mm in the same direction as the water flow direction, so as to reduce power loss and increase the impact of suspended particles to condense and deposit, so that the centrifugal separation and gravity separation achieve the best effect.

[0010] In order to timely find the blockage of the filtering device or the air outlet pipe, and reduce the pressure of the water inlet, an auxiliary air outlet pipe is arranged on the side wall of the main cylinder below the filtering device.

[0011] In order to monitor the treatment effect of each unit and the change of water quality of each part at any time, monitoring taps are arranged on the side wall of the main cylinder at different heights and on the head.

[0012] In order to facilitate maintenance, manholes are arranged on the head and the side wall of the main cylinder, and manholes or hand holes are arranged on the side wall of the underflow concentration cone.

[0013] The third separating device of the sewage purifier is a filtering device, mainly comprising a filtering layer, in which a dynamic filtering process of sewage is completed. The filtering layer is composed of granular filtering material or multi-medium material with specific gravity less than 1, and an upper filter screen or a filter cap (water cap) plate is arranged on the filtering layer. The specific gravity of the filtering material is less than 1, and the filtering material floats in water during the operation of the purifier. In order to prevent the filtering material from being taken away and lost by water when the water in the sewage purifier is exhausted, a lower filter screen can be additionally arranged on the filtering layer.

[0014] After the sewage purifier is operated for a certain period of time, the filtering material needs to be backwashed to reduce the filtering resistance, or the filtering layer needs to be backwashed due to sludge overflow caused by misoperation. The backwashing can be performed by injecting clean water from the water outlet pipe. Preferably, a backwashing water pipe is additionally arranged in the filtering layer, and a plurality of nozzles are uniformly arranged on the backwashing water pipe to perform backwashing from the inside of the filtering layer.

[0015] Beneficial effects

[0016] The sewage purifier of the utility model is suitable for various sewage bodies containing solid suspended matters with different mass and concentration, has high sewage treatment efficiency, consumes less time, occupies less equipment area, and has low power consumption and operation cost. The sludge after secondary concentration by the lower cyclone has lower water content, and the sludge underflow concentration can be increased by 30-50% compared with the original equipment. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a general structure schematic view of the utility model embodiment.

[0018] Figure 2 It is a top view schematic view of the lower cyclone concentration device.

[0019] In the drawing: 1 is an underflow concentration cone, 2 is a main body cylinder, 3 is a water inlet pipe, 4 is a central cyclone cylinder, 5 is a cyclone cylinder overflow pipe nozzle, 6 is an upper cyclone clarifying device, 7 is a filter screen, 8 is a filtering layer, 9 is a filter cap plate, 10 is an end cover, 11 is a water outlet pipe, 12 is a manhole, 13 is a monitoring faucet, 14 is an underflow pipe nozzle, 15 is an inner cone ring, 151 is a lower cyclone water channel, 16 is a blow-off pipe, 17 is a hand hole, 18 is a central cyclone cylinder bracket, 19 is an upper cyclone clarifying device bracket, 20 is an exhaust pipe, 21 is an auxiliary exhaust pipe, and 22 is a filter cap. DETAILED DESCRIPTION

[0020] The utility model embodiment: on the basis of DH-80 type high efficiency cyclone sewage purifier, 100m3 of sewage can be treated per hour.

[0021] Referring to the accompanying drawings Figure 1, the tank body is composed of a cylindrical main cylinder 2 and a bottom flow concentration cone 1 at the lower end of the main cylinder, the height of the main cylinder 2 is 5000 mm, the diameter is 2800 mm, the height of the bottom flow concentration cone 1 is 2900 mm, and the upper cone opening is welded with the lower cylinder opening of the main cylinder 2 as a whole; the upper end of the main cylinder 2 is provided with a head 10, the height of the head 10 is 750 mm, and the head 10 is also welded with the upper cylinder opening of the main cylinder 2 as a whole; the head 10 is provided with a water outlet pipe 11 with a pipe diameter of DN150 mm in the center, and the bottom of the bottom flow concentration cone 1 is provided with a blowdown opening 16 with a diameter of DN150 mm for discharging sludge.

[0022] Referring to the drawings Figure 1 At the upper part of the bottom flow concentration cone 1, a lower cyclone concentration device is additionally provided, that is, an inner cone ring 15 in the shape of a circular conical platform with a smaller height is arranged at the inner side of the upper part of the bottom flow concentration cone 1 at intervals and coaxially with the conical surface of the bottom flow concentration cone 1, the straight diameter of the upper cone opening of the inner cone ring 15 is 2600 mm, the straight diameter of the lower cone opening is 1800 mm, and the height of the inner cone ring is 900 mm, and the upper cone bottom of the inner cone ring 15 is closedly connected with the upper cone bottom of the bottom flow concentration cone 1. A 100 mm cone ring interlayer is arranged between the outer side conical surface of the inner cone ring 15 and the inner conical surface of the bottom flow concentration cone 1, and the annular interlayer constitutes a lower cyclone water channel 151 of the lower cyclone concentration device. Referring to the drawings Figure 2 The bottom flow pipe nozzle 14 of the central cyclone cylinder 4 is connected to the upper end of the lower cyclone water channel 151 in a horizontal tangent direction, so that the concentrated sewage in the bottom flow pipe nozzle 14 enters the lower cyclone water channel 151 in a tangent direction to perform a second concentration.

[0023] A manhole 12 with a diameter of 530 mm is arranged on the head 10 and the upper part of the side surface of the main cylinder 2, two handholes 17 with a diameter of 250 mm are arranged on the side wall of the bottom flow concentration cone 1, a blow-off pipe 20 with a pipe diameter of DN100 mm is arranged on the head 10, an auxiliary blow-off pipe 21 with a pipe diameter of DN50 mm is arranged on the side wall of the main cylinder 2 at the lower side of the filter layer, and monitoring faucets 13 with a pipe diameter of DN25 mm are arranged at different heights on the side wall of the tank body.

[0024] The first separation device in the main cylinder 2 is a central cyclone cylinder 4 fixed in the center of the lower part of the main cylinder 2 through a steel support bracket 18; the total height of the cyclone cylinder is 1800 mm, the height of the cylindrical part and the conical part is 900 mm respectively, the diameter of the upper end of the conical part is 500 mm, and the diameter of the lower end of the conical part is 150 mm. The water inlet pipe 3 is a variable cross-section pipe with a pipe diameter of DN72 mm, the water inlet pipe 3 enters the upper part of the central cyclone cylinder 4 in a tangent direction from the outside of the main cylinder 2, and the sewage completes a first vortex separation process in the central cyclone cylinder 4.

[0025] Above the central cyclone cylinder 4 is a second separation device, namely an upper cyclone clarification device 6 with an upper diameter of 2000mm and a lower diameter of 500mm, which is larger at the top and smaller at the bottom, and has an inverted cone shape of 58 degrees. On its inner surface, there is a track-type spiral cyclone channel with a width of 125mm and a depth of 150mm that is consistent with the direction of water flow. The sewage completes the second centrifugal and gravity separation process here.

[0026] The third separation device includes a lower filter screen 7, a filter layer 8, a filter cap plate 9, and multiple filter caps 22. The lower filter screen 7 is composed of two layers of screens, with the upper layer being a 32-mesh screen and the lower layer being a 6-mesh screen. Above the lower filter screen 7, a filter layer 8 is filled with lightweight filter media with a specific gravity of less than 1, such as foam or filter beads. Above the filter layer 8, a filter cap plate 9 is provided, with multiple filter caps 22 arranged on the filter cap plate 9 to prevent the filter media from flowing out. Water containing floating matter passes through the filter layer 8, completing a dynamic filtration process.

[0027] After the wastewater purifier has been running for a certain period of time, the filter media needs to be backwashed to reduce filtration resistance; or due to misoperation, sludge may rise and clog the filter screen, requiring backwashing of the filter layer 8. Backwashing can be performed by injecting clean water through the outlet pipe 11. In this invention, a backwash water pipe is separately provided in the filter layer 8, and multiple nozzles are evenly distributed on the backwash water pipe (neither the backwash water pipe nor the nozzles are shown in the attached drawings) to perform backwashing from the inside of the filter layer 8.

[0028] This utility model's wastewater purifier, equipped with a wastewater pump and a dosing system, can quickly, continuously, and efficiently treat various types of wastewater containing suspended solids, and can process 100 cubic meters of wastewater per hour.

[0029] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An improved rotating flow sewage purifier, comprising a tank body composed of a cylindrical main body cylinder (2) in the middle and upper part and an underflow concentration cone (1) in the lower part, the upper end of the main body cylinder (2) having a head (10), the top of the head (10) having a water outlet pipe (11) and an exhaust pipe (20), the bottom of the underflow concentration cone (1) having a sewage discharge pipe (16); the main body cylinder (2) is provided with three separation devices, the first separation device being a central rotating flow cylinder (4) fixed in the lower center thereof, the upper end of the central rotating flow cylinder (4) being provided with an overflow pipe and its nozzle, the lower end of the central rotating flow cylinder (4) being provided with an underflow pipe and its nozzle, the water inlet pipe (3) being tangentially connected to the upper part of the central rotating flow cylinder (4) from the outside of the main body cylinder (2); the second separation device being an upper rotating flow clarifying device (6) arranged above the central rotating flow cylinder (4); the third separation device being a filtering device arranged above the upper rotating flow clarifying device (6), the filtering device being provided with a backflushing water pipe having a plurality of nozzles thereon; a lower rotating flow concentration device is further arranged in the upper part of the underflow concentration cone (1), i.e. an inner cone ring (15) with a smaller height is arranged on the inner side of the upper part of the underflow concentration cone (1) at intervals and coaxially with the conical surface thereof, the upper conical bottom of the inner cone ring (15) being sealingly connected with the upper conical bottom of the underflow concentration cone (1), the conical ring interlayer on the outer side of the inner cone ring (15) constituting a rotating flow channel (151) of the lower rotating flow concentration device; the underflow pipe nozzle (14) of the central rotating flow cylinder (4) being tangentially connected to the upper end of the rotating flow channel (151) in a horizontal direction. The upper rotating flow clarifying device (6) is an inverted cone with a large upper part and a small lower part, having a track-type spiral rotating flow groove on the inner surface thereof in the same direction as the water flow. characterized in that The filtering device is provided with an auxiliary exhaust pipe (21) on the side wall of the main body cylinder (2).

2. The sewage purifier according to claim 1, characterized in that The main body cylinder (2) side wall and the head (10) are provided with monitoring faucets (13) at different heights; the head (10) and the main body cylinder (2) side wall are provided with manholes (12); the side wall of the underflow concentration cone (1) is provided with manholes (12) or handholes (17).

3. The sewage purifier according to claim 2, characterized in that ​ 4. The sewage purifier according to claim 2, wherein ​

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